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Heating, Ventilation, and Air Conditioning: Removal & Installation GMC Terrain I

Automatic HVAC System 32 illustrations ~2633 words

Removal Procedure

  1. Remove the seal washer from the A/C refrigerant component.
  2. Inspect the seal washer for any signs of damage.
  3. Inspect the A/C refrigerant components for damage or burrs. Repair or replace as necessary.
  4. Discard the sealing washer.

Installation Procedure

  1. Inspect the new seal washer for any signs of cracks, cuts, or damage. Do not use a damaged seal washer.
  2. Using a lint-free clean, dry cloth, clean the sealing surfaces of the A/C refrigerant components.
  3. Carefully install the new seal washer onto the A/C refrigerant component.
  4. The washer must completely bottom against the surface of the fitting.
  5. Assemble the remaining A/C refrigerant components. Refer to the appropriate repair procedure.
  1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure For compression style fittings use a back up wrench on the fitting (2) and loosen the fitting nut (1). For banjo style fittings remove the bolt retaining the banjo type fitting.
  2. Remove the O-ring seal from the A/C refrigerant component.
  3. Inspect the O-ring seal for signs of damage to help determine the root cause of the failure.
  4. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.
  5. Cap or tape the A/C refrigerant components.
  6. Discard the O-ring seal.
  1. Inspect the new O-ring seal for any sign or cracks, cuts, or damage. Replace if necessary.
  2. Remove the cap or tape from the A/C refrigerant components.
  3. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant components.
  4. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil.
  5. Carefully slide the new O-ring seal onto the A/C refrigerant component.
  6. The O-ring seal must be fully seated.
  7. Assemble the A/C components. Refer to the appropriate repair procedure. For compression style fittings use a back up wrench on the fitting (2) and tighten the fitting nut (1) to specification. For banjo style fittings install the bolt retaining the banjo type fitting and tighten to specification.

Air Conditioning Compressor Hose Replacement (LF1 or LFW)

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedures

  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  2. Remove the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  3. Remove the air conditioning compressor hose nut (2) from the air conditioning evaporator thermal expansion valve tube hose.
  4. Remove the air conditioning compressor hose from the air conditioning evaporator thermal expansion valve tube hose.
  5. Remove the compressor hose nut (2) from the condenser.
  6. Remove the compressor hose (1) from the condenser.
  7. Unclip hose from fan shroud.
  8. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-491131-S06536846302012073000000) .
  9. Disconnect the electrical connector from the air conditioning refrigerant pressure sensor valve.
  10. Remove the compressor hose nut (1) at the compressor.
  11. Remove the compressor hose (2) from the compressor.
  12. Remove the compressor hose from the vehicle.
  13. Remove and discard the sealing washers from the compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  1. Install new seal washers to the compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  2. Install the compressor hose (2) to the compressor.
  3. Install the compressor hose nut (1) to the compressor and tighten the nut to 22 N.m (16 lb ft).
  4. Connect the electrical connector to the air conditioning refrigerant pressure sensor valve.
  5. Lower the vehicle.
  6. Position the compressor hose in the vehicle.
  7. Install a new sealing washer to the air conditioning evaporator thermal expansion valve tube hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  8. Install the air conditioning evaporator thermal expansion valve tube hose to the compressor hose.
  9. Install the compressor hose nut (2) to the air conditioning evaporator thermal expansion valve tube hose and tighten the nut to 22 N.m (16 lb ft).
  10. Install a new sealing washer to the compressor hose at the condenser. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  11. Install the compressor hose (1) to the condenser.
  12. Install the compressor hose nut (2) to the condenser and tighten to 20 N.m (15 lb ft).
  13. Install the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  14. Recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  15. Test the affected A/C joints for leaks using J 39400-A halogen leak detector.

Air Conditioning Compressor Hose Replacement (LEA)

Special Tools

J 39400-A Halogen Leak Detector

  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  2. Remove the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  3. Remove the air conditioning compressor hose nut (1) from the air conditioning evaporator thermal expansion valve tube hose.
  4. Remove the air conditioning compressor hose from the air conditioning evaporator thermal expansion valve tube hose.
  5. Remove the compressor hose nut (1) from the condenser.
  6. Remove the compressor hose (2) from the condenser.
  7. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-491131-S06536846302012073000000) .
  8. Disconnect the electrical connector from the air conditioning refrigerant pressure sensor valve.
  9. Remove the compressor hose nut (1) at the compressor.
  10. Remove the compressor hose (2) from the compressor.
  11. Remove the compressor hose from the vehicle.
  12. Remove and discard the sealing washers from the compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  1. Install new seal washers to the compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  2. Install the compressor hose (2) to the compressor.
  3. Install the compressor hose nut (1) to the compressor and tighten the nut to 22 N.m (16 lb ft).
  4. Connect the electrical connector to the air conditioning refrigerant pressure sensor valve.
  5. Lower the vehicle.
  6. Position the compressor hose in the vehicle.
  7. Install a new sealing washer to the air conditioning evaporator thermal expansion valve tube hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  8. Install the air conditioning evaporator thermal expansion valve tube hose to the compressor hose.
  9. Install the compressor hose nut (1) to the air conditioning evaporator thermal expansion valve tube hose and tighten the nut to 22 N.m (16 lb ft).
  10. Install a new sealing washer to the compressor hose at the condenser. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  11. Install the compressor hose (2) to the condenser.
  12. Install the compressor hose nut (1) to the condenser and tighten to 22 N.m (16 lb ft).
  13. Install the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  14. Recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  15. Test the affected A/C joints for leaks using J 39400-A halogen leak detector.

Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement

Special Tools

J 39400-A Halogen Leak Detector

  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  2. Remove the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  3. Remove the surge tank. Refer to «Radiator Surge Tank Replacement»(ref-491221-S37187009892012073000000) .
  4. Remove the washer bottle. Refer to «Windshield Washer Solvent Container Replacement (Terrain)»(ref-491173-S28434043552012073000000) , «Windshield Washer Solvent Container Replacement (Equinox)»(ref-491173-S15839095342012073000000) .
  5. Remove the battery. Refer to «Battery Replacement»(ref-491171-S28189113282012073000000) .
  6. Remove the battery box bolts from the battery box.
  7. Disconnect the negative battery cable nut from the wheelhouse.
  8. Remove the nut retaining the liquid line to the strut tower.
  9. Disconnect the harness and vent hose retainers from the liquid line.
  10. Remove the evaporator outlet hose and liquid line retainer plate nut from the thermal expansion valve (TXV).
  11. Remove the evaporator outlet hose and liquid line from the TXV.
  12. Remove the liquid line nut from the condenser.
  13. Remove the liquid line from the condenser.
  14. Remove the bolt retaining the liquid line to the body.
  15. Position the battery box inboard to allow for routing of the liquid line.
  16. Route the liquid line above the battery box and the ground lug.
  17. Lift the rear portion of the liquid line upward and remove the liquid line from the vehicle.
  18. Remove and discard the sealing washer from the liquid line. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  19. Install protective caps to the condenser, the evaporator outlet hose, and the TXV to prevent contamination and desiccant saturation.
  1. Route the liquid line below the battery box and the ground lug.
  2. Connect the negative battery cable nut to the wheelhouse and tighten to 12 N.m (106 lb in).
  3. Remove the protective caps from the condenser, the evaporator outlet hose, and the TXV.
  4. Install the new sealing washer to the liquid line. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  5. Route the condenser end of the liquid line into position.
  6. Install the liquid line to the condenser.
  7. Install the liquid line nut to the condenser and tighten to 22 N.m (16 lb ft).
  8. Install the bolt to retain the liquid line to the body and tighten to 9 N.m (80 lb in).
  9. Remove the protective cap from the TXV, the liquid line, and the evaporator outlet hose.
  10. Install new seal washers to the liquid line and the evaporator outlet hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  11. Install the liquid line and the evaporator outlet hose to the TXV.
  12. Install the liquid line and evaporator outlet hose retainer plate nut to the TXV and tighten to 22 N.m (16 lb ft).
  13. Install the four battery box bolts to the inside of the battery box and tighten to 15 N.m (11 lb ft).
  14. Install the battery box bolt to the outside of the battery box and tighten to 10 N.m (86 lb in).
  15. Install the battery. Refer to «Battery Replacement»(ref-491171-S28189113282012073000000) .
  16. Install the liquid line to the strut tower.
  17. Install the liquid line nut to the strut tower and tighten to 9 N.m (80 lb in).
  18. Connect the harness and vent hose retainers to the liquid line.
  19. Install the surge tank. Refer to «Radiator Surge Tank Replacement»(ref-491221-S37187009892012073000000) .
  20. Install the washer bottle. Refer to «Windshield Washer Solvent Container Replacement (Terrain)»(ref-491173-S28434043552012073000000) , «Windshield Washer Solvent Container Replacement (Equinox)»(ref-491173-S15839095342012073000000) .
  21. Install the left headlamp. Refer to «Headlamp Replacement (Equinox)»(ref-491150-S35344908232012073000000) , «Headlamp Replacement (Terrain)»(ref-491150-S18491521472012073000000) .
  22. Recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  23. Test the affected A/C joints for leaks using J 39400-A Halogen Leak Detector.

Air Conditioning Evaporator Thermal Expansion Valve Hose Replacement

Special Tools

J 39400-A Halogen Leak Detector

  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  2. Remove the air conditioning compressor hose nut (1) from the air conditioning evaporator thermal expansion valve tube hose.
  3. Remove the air conditioning compressor hose from the air conditioning evaporator thermal expansion valve tube hose.
  4. Remove the compressor hose retainer nut (2) from the battery box.
  5. Remove the air conditioning evaporator thermal expansion valve tube hose nut (1) from the thermal expansion valve.
  6. Remove the air conditioning evaporator thermal expansion valve tube hose (2) from the vehicle.
  7. Remove and discard the sealing washers from the air conditioning evaporator thermal expansion valve tube hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  1. Install new seal washers to the air conditioning evaporator thermal expansion valve tube hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  2. Position the air conditioning evaporator thermal expansion valve tube hose in the vehicle.
  3. Install the air conditioning evaporator thermal expansion valve tube hose (2) to the thermal expansion valve.
  4. Install the air conditioning evaporator thermal expansion valve tube hose nut (1) to the thermal expansion valve and tighten the nut to 22 N.m (16 lb ft).
  5. Install a new sealing washer to the air conditioning evaporator thermal expansion valve tube hose at the compressor hose. Refer to «Air Conditioning System Seal Replacement»(ref-491156-S32751145912012073000000) .
  6. Install the air conditioning evaporator thermal expansion valve tube hose (2) to the compressor hose.
  7. Install the air conditioning evaporator thermal expansion valve tube hose nut (1) to the compressor hose and tighten to 22 N.m (16 lb ft).
  8. install the compressor hose retainer nut (2) to the battery box and tighten to 22 N.m (16 lb ft).
  9. Recharge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  10. Test the affected A/C joints for leaks using J 39400-A halogen leak detector.
  1. Recover the refrigerant. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  2. Use J 46246 Valve Core Removal Tool or equivalent to remove the valve core.
  1. Use J 46246 Valve Core Removal Tool or equivalent to install and tighten the valve core.
  2. Evacuate and charge the A/C system. Refer to «Refrigerant Recovery and Recharging»(ref-491156-S07584046762012073000000) .
  3. Test the affected A/C fittings for leaks using J 39400-A Halogen Leak Detector.

Scheme 1

Scheme 1: Receiver and Dehydrator Replacement
Scheme 1: Receiver and Dehydrator Replacement
CalloutComponent Name
Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the radiator air lower baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement . Remove the radiator air upper baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement .
1Receiver and Dehydrator Bracket Bolt CAUTION: Refer to Fastener Caution . Tighten 4.2 N.m (37 lb in)
2Receiver and Dehydrator Bracket
3Receiver and Dehydrator Bolt Tighten 6.5 N.m (58 lb in)
4Receiver and Dehydrator Procedure Add the specified amount of polyalkylene glycol (PAG) oil to the receiver dehydrator. Refer to Refrigerant System Specifications Install new O-rings to the receiver dehydrator. Refer to Air Conditioning O-Ring Seal Replacement
CAUTION
Refer to Fastener Caution .

Receiver and Dehydrator Replacement

Scheme 2

Scheme 2: Air Conditioning Evaporator Thermal Expansion Valve Replacement
Scheme 2: Air Conditioning Evaporator Thermal Expansion Valve Replacement
CalloutComponent Name
Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the air conditioning condenser and air conditioning evaporator tube from the expansion valve. Refer to Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement .
1Thermal Expansion Valve Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 4.7 N.m (41 lb in)
2Thermal Expansion Valve TIP: Remove and discard the sealing washers. Refer to Air Conditioning System Seal Replacement .
CAUTION
Refer to Fastener Caution .

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Scheme 3

Scheme 3: Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LF1 or LFW)
Scheme 3: Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LF1 or LFW)
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the electrical connector from the refrigerant pressure sensor.
1A/C Refrigerant Pressure Sensor CAUTION: Refer to Fastener Caution . Procedure Remove the refrigerant pressure sensor from the compressor hose. Hand start the refrigerant pressure sensor to the compressor hose, taking care not to pinch the O-ring and tighten. TIP: Lubricate the refrigerant pressure sensor O-ring with mineral oil. Refer to Air Conditioning O-Ring Seal Replacement . Tighten 4 N.m (35 lb in)
CAUTION
Refer to Fastener Caution .

Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LF1 or LFW)

Scheme 4

Scheme 4: Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LEA)
Scheme 4: Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LEA)
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the electrical connector from the refrigerant pressure sensor.
1A/C Refrigerant Pressure Sensor CAUTION: Refer to Fastener Caution . Procedure Remove the refrigerant pressure sensor from the compressor hose. Hand start the refrigerant pressure sensor to the compressor hose, taking care not to pinch the O-ring and tighten. NOTE: Lubricate the refrigerant pressure sensor O-ring with mineral oil. Refer to Air Conditioning O-Ring Seal Replacement . Tighten 4 N.m (35 lb in)
CAUTION
Refer to Fastener Caution .
NOTE
Lubricate the refrigerant pressure sensor O-ring with mineral oil. Refer to Air Conditioning O-Ring Seal Replacement .

Air Conditioning Refrigerant Pressure Sensor Valve Replacement (LEA)

Scheme 5

Scheme 5: Evaporator Air Temperature Sensor Replacement
Scheme 5: Evaporator Air Temperature Sensor Replacement
CalloutComponent Name
Preliminary Procedures Remove the Instrument panel insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Right Side (Terrain) , Instrument Panel Insulator Panel Replacement - Right Side (Equinox) . Reposition any wiring or hoses to gain access to evaporator temperature sensor.
1Evaporator Temperature Sensor Procedure Disconnect the wiring connector Rotate sensor 1/4 turn counter clock wise to remove

Evaporator Air Temperature Sensor Replacement

Scheme 6

Scheme 6: Air Conditioning Condenser Replacement
Scheme 6: Air Conditioning Condenser Replacement
CalloutComponent Name
Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the radiator air lower baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement . Remove the radiator air upper baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement . Remove the air conditioning compressor hose. Refer to Air Conditioning Compressor Hose Replacement (LF1 or LFW) , Air Conditioning Compressor Hose Replacement (LEA) Remove the air conditioning condenser and air conditioning evaporator tube. Refer to Air Conditioning Condenser and Air Conditioning Evaporator Tube Replacement
1Air Conditioning Condenser Bolt CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Air Conditioning Condenser Procedure Add the specified amount of polyalkylene glycol (PAG) oil to the condenser. Refer to Refrigerant System Specifications
CAUTION
Refer to Fastener Caution .

Air Conditioning Condenser Replacement

Scheme 7

Scheme 7: Heater and Air Conditioning Evaporator and Blower Module Replacement
Scheme 7: Heater and Air Conditioning Evaporator and Blower Module Replacement
CalloutComponent Name
Preliminary Procedures Remove the intake manifold sight shield. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the heater inlet hose from the heater core tube. Refer to Heater Inlet Hose Replacement (LEA) , Heater Inlet Hose Replacement (LF1 or LFW) . Remove the heater outlet hose from the heater core tube. Refer to Heater Outlet Hose Replacement (LF1 or LFW) , Heater Outlet Hose Replacement (LEA) . Remove the evaporator hose assembly from the thermal expansion valve. Refer to Air Conditioning Evaporator Thermal Expansion Valve Replacement . Remove the instrument panel carrier. Refer to Instrument Carrier Replacement (Equinox) , Instrument Carrier Replacement (Terrain) .
1Heater and Air Conditioning Evaporator and Blower Module Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2Heater and Air Conditioning Evaporator and Blower Module Procedure With the aid of an assistant, remove the heater and air conditioning evaporator and blower module from the vehicle.
CAUTION
Refer to Fastener Caution .

Heater and Air Conditioning Evaporator and Blower Module Replacement

  1. Remove the HVAC module. Refer to «Heater and Air Conditioning Evaporator and Blower Module Replacement»(ref-491156-S32597617292012073000000) .
  2. Remove the heater core cover screws from the evaporator case assembly.
  3. Remove the heater core cover from the evaporator case assembly.
  4. Remove the heater core from the HVAC module.
  5. Remove the evaporator case assembly screws from the blower case assembly.
  6. Remove the evaporator case assembly from the blower case assembly.
  1. Install evaporator case assembly to the blower case assembly.
  2. Install evaporator case assembly screws to the blower case assembly. Tighten Tighten the screws to 1.5 N.m (13 lb in).
  3. Install heater core to the HVAC module.
  4. Install heater core cover.
  5. Install heater core cover screws. Tighten Tighten the screws to 1.5 N.m (13 lb in).
  6. Install the HVAC module. Refer to «Heater and Air Conditioning Evaporator and Blower Module Replacement»(ref-491156-S32597617292012073000000) .

Scheme 8

Scheme 8: Air Conditioning Evaporator Core Replacement
Scheme 8: Air Conditioning Evaporator Core Replacement
CalloutComponent Name
Preliminary Procedures Remove the thermal expansion valve. Refer to Air Conditioning Evaporator Thermal Expansion Valve Hose Replacement Remove the heater and air conditioning evaporator and blower module. Refer to Heater and Air Conditioning Evaporator and Blower Module Replacement . Remove the heater core. Refer to Heater Core Replacement Disconnect the Heater and air conditioning evaporator and Blower module assembly electrical connectors.
1Heater and Air Conditioning Evaporator and Blower Module Case Screw (Qty: 6) CAUTION: Refer to Fastener Caution . Tighten 1.5Y (13 lb in)
2Upper Heater Case.
3Air Conditioning Evaporator Core
CAUTION
Refer to Fastener Caution .

Air Conditioning Evaporator Core Replacement

Scheme 9

Scheme 9: Heater Inlet Hose Replacement (LF1 or LFW)
Scheme 9: Heater Inlet Hose Replacement (LF1 or LFW)
CalloutComponent Name
Preliminary Procedures Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) , Cooling System Draining and Filling (Static LF1 or LFW) , Cooling System Draining and Filling (Static LAF or LEA) Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement
1Heater Inlet Hose Clamps (Qty 2) Procedure Using J 38185 Hose Clamp Pliers reposition the heater inlet hose. Special Tools J 38185 Hose Clamp Pliers
2Heater Inlet Hose

Heater Inlet Hose Replacement (LF1 or LFW)

Scheme 10

Scheme 10: Heater Inlet Hose Replacement (LEA)
Scheme 10: Heater Inlet Hose Replacement (LEA)
CalloutComponent Name
Preliminary Procedures Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) , Cooling System Draining and Filling (Static LF1 or LFW) , Cooling System Draining and Filling (Static LAF or LEA) Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement
1Heater Inlet Hose Clamps (Qty 2) Procedure Using J 38185 Hose Clamp Pliers reposition the heater inlet hose clamps. Special Tools J 38185 Hose Clamp Pliers
2Heater Inlet Hose

Heater Inlet Hose Replacement (LEA)

Scheme 11

Scheme 11: Heater Outlet Hose Replacement (LF1 or LFW)
Scheme 11: Heater Outlet Hose Replacement (LF1 or LFW)
CalloutComponent Name
Preliminary Procedures Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) , Cooling System Draining and Filling (Static LF1 or LFW) , Cooling System Draining and Filling (Static LAF or LEA) Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement
1Heater Outlet Hose Clamps (Qty 2) Procedure Using J 38185 Hose Clamp Pliers reposition the heater outlet hose. Special Tools J 38185 Hose Clamp Pliers
2Heater Outlet Hose

Heater Outlet Hose Replacement (LF1 or LFW)

Scheme 12

Scheme 12: Heater Outlet Hose Replacement (LEA)
Scheme 12: Heater Outlet Hose Replacement (LEA)
CalloutComponent Name
Preliminary Procedures Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) , Cooling System Draining and Filling (Static LF1 or LFW) , Cooling System Draining and Filling (Static LAF or LEA) Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement
1Heater Outlet Hose Clamps (Qty 2) Procedure Using J 38185 Hose Clamp Pliers reposition the heater outlet hose clamps. Special Tools J 38185 Hose Clamp Pliers
2Heater Outlet Hose

Heater Outlet Hose Replacement (LEA)

Scheme 13

Scheme 13: Passenger Compartment Air Filter Replacement
Scheme 13: Passenger Compartment Air Filter Replacement
CalloutComponent Name
Preliminary Procedure Remove the instrument panel compartment. Refer to Instrument Panel Compartment Door Replacement (Terrain) , Instrument Panel Compartment Door Replacement (Equinox) .
1Passenger Compartment Air Filter Procedure Release the retainer and open the service lid.

Passenger Compartment Air Filter Replacement

Scheme 14

Scheme 14: Air Inlet Housing Replacement
Scheme 14: Air Inlet Housing Replacement
CalloutComponent Name
Preliminary Procedures Remove the Heater and Air Conditioning Evaporator and Blower Module. Refer to Heater and Air Conditioning Evaporator and Blower Module Replacement . Disconnect the electrical connectors as necessary.
1Air Inlet Housing Fastener (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Air Inlet Housing
CAUTION
Refer to Fastener Caution .

Air Inlet Housing Replacement

Scheme 15

Scheme 15: Blower Motor Replacement
Scheme 15: Blower Motor Replacement
CalloutComponent Name
Preliminary Procedure Remove the instrument panel (I/P) insulator panel - right side. Refer to Instrument Panel Insulator Panel Replacement - Right Side (Terrain) , Instrument Panel Insulator Panel Replacement - Right Side (Equinox) . Disconnect the blower motor electrical connector.
1Blower Motor Fastener (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Blower Motor
CAUTION
Refer to Fastener Caution .

Blower Motor Replacement

Scheme 16

Scheme 16: Side Window Defogger Outlet Grille Replacement (Equinox)
Scheme 16: Side Window Defogger Outlet Grille Replacement (Equinox)
CalloutComponent Name
1Side Window Defroster Outlet Grilles (Left) Procedure Use a flat bladed plastic trim tool in order to release the side window defroster outlet grille from the instrument panel assembly.
2Side Window Defroster Outlet Grilles (Right) Procedure Use a flat bladed plastic trim tool in order to release the side window defroster outlet grille from the instrument panel assembly.

Side Window Defogger Outlet Grille Replacement (Equinox)

Scheme 17

Scheme 17: Side Window Defogger Outlet Grille Replacement (Terrain)
Scheme 17: Side Window Defogger Outlet Grille Replacement (Terrain)
CalloutComponent Name
1Side Window Defroster Outlet Grilles (Left) Procedure Use a flat bladed plastic trim tool in order to release the side window defroster outlet grille from the instrument panel assembly.
2Side Window Defroster Outlet Grilles (Right) Procedure Use a flat bladed plastic trim tool in order to release the side window defroster outlet grille from the instrument panel assembly.

Side Window Defogger Outlet Grille Replacement (Terrain)

Scheme 18

Scheme 18: Instrument Panel Outer Air Outlet Replacement (Equinox)
Scheme 18: Instrument Panel Outer Air Outlet Replacement (Equinox)
CalloutComponent Name
1Instrument Panel Outer Air Outlet (Left) Procedure Use a flat bladed plastic trim tool in order to release the instrument panel outer air outlet from the instrument panel assembly.
2Instrument Panel Outer Air Outlet (Right) Procedure Use a flat bladed plastic trim tool in order to release the instrument panel outer air outlet from the instrument panel assembly.

Instrument Panel Outer Air Outlet Replacement (Equinox)

Scheme 19

Scheme 19: Instrument Panel Outer Air Outlet Replacement (Terrain)
Scheme 19: Instrument Panel Outer Air Outlet Replacement (Terrain)
CalloutComponent Name
1Instrument Panel Outer Air Outlet (Left) Procedure Use a flat bladed plastic trim tool in order to release the instrument panel outer air outlet from the instrument panel assembly.
2Instrument Panel Outer Air Outlet (Right) Procedure Use a flat bladed plastic trim tool in order to release the instrument panel outer air outlet from the instrument panel assembly.

Instrument Panel Outer Air Outlet Replacement (Terrain)

Scheme 20

Scheme 20: Instrument Panel Center Air Outlet Replacement (Equinox)
Scheme 20: Instrument Panel Center Air Outlet Replacement (Equinox)
CalloutComponent Name
Preliminary Procedure Remove the Radio Control Assembly. Refer to Radio Control Assembly Replacement .
1Left Instrument Panel Center Air Outlet Fasteners (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
2Left Instrument Panel Center Air Outlet Procedure Slide a flat bladed plastic trim tool along the outward edge of the outlet assembly releasing the retainer tabs securing the outlet to the instrument panel assembly.
3Right Instrument Panel Center Air Outlet Fasteners (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
4Right Instrument Panel Center Air Outlet Procedure Slide a flat bladed plastic trim tool along the outward edge of the outlet assembly releasing the retainer tabs securing the outlet to the instrument panel assembly.
CAUTION
Refer to Fastener Caution .
CAUTION
Refer to Fastener Caution .

Instrument Panel Center Air Outlet Replacement (Equinox)

Scheme 21

Scheme 21: Instrument Panel Center Air Outlet Replacement (Terrain)
Scheme 21: Instrument Panel Center Air Outlet Replacement (Terrain)
CalloutComponent Name
Preliminary Procedure Remove the Radio Control Assembly. Refer to Radio Control Assembly Replacement .
1Left Instrument Panel Center Air Outlet Fasteners (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
2Left Instrument Panel Center Air Outlet Procedure Slide a flat bladed plastic trim tool along the outward edge of the outlet assembly releasing the retainer tabs securing the outlet to the instrument panel assembly.
3Right Instrument Panel Center Air Outlet Fasteners (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (22 lb in)
4Right Instrument Panel Center Air Outlet Procedure Slide a flat bladed plastic trim tool along the outward edge of the outlet assembly releasing the retainer tabs securing the outlet to the instrument panel assembly.
CAUTION
Refer to Fastener Caution .
CAUTION
Refer to Fastener Caution .

Instrument Panel Center Air Outlet Replacement (Terrain)

  1. Remove the front floor console. Refer to «Front Floor Console Replacement»(ref-491152-S15125630372012073000000) .
  2. Slide the center floor air outlet duct forward enough to clear the rear floor air outlet duct, and then up, and rearward to remove.
  1. Slide the center floor air outlet duct forward enough to clear rear floor air duct, and then down, and rearward to install.
  2. Install the front floor console. Refer to «Front Floor Console Replacement»(ref-491152-S15125630372012073000000) .
  1. Remove the front seats. Refer to «Driver or Passenger Seat Replacement»(ref-491151-S39852071872012073000000) .
  2. Remove the floor console. Refer to «Front Floor Console Replacement»(ref-491152-S15125630372012073000000) .
  3. Partially remove the floor carpet from the front footwells to the B-pillars. Refer to «Front Floor Panel Carpet Replacement»(ref-491144-S10593929772012073000000) .
  4. Remove the rear floor air outlet push pins from the floor pan.
  5. Remove the rear floor air outlet from the floor pan.
  1. Install the rear floor air outlet to the floor pan.
  2. Install the rear floor air outlet push pins to the floor pan.
  3. Install the floor carpet to the B-pillars and the front footwells. Refer to «Front Floor Panel Carpet Replacement»(ref-491144-S10593929772012073000000)
  4. Install the floor console. Refer to «Front Floor Console Replacement»(ref-491152-S15125630372012073000000) .
  5. Install the front seats. Refer to «Driver or Passenger Seat Replacement»(ref-491151-S39852071872012073000000) .

Scheme 22

Scheme 22: Defroster Valve Replacement
Scheme 22: Defroster Valve Replacement
CalloutComponent Name
Preliminary Procedures Remove the HVAC module. Refer to Heater and Air Conditioning Evaporator and Blower Module Replacement . Disconnect all the electrical connectors from components associated with the HVAC module. Remove any components associated with splitting the air distribution case.
1Distribution case fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Split Distribution case
3Defroster Valve
CAUTION
Refer to Fastener Caution .

Defroster Valve Replacement

Scheme 23

Scheme 23: Instrument Panel Center Air Outlet Duct Replacement
Scheme 23: Instrument Panel Center Air Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim pad retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Center Air Outlet Duct Fastener (Qty: 1) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Center Air Outlet Duct
CAUTION
Refer to Fastener Caution .

Instrument Panel Center Air Outlet Duct Replacement

Scheme 24

Scheme 24: Air Distributor Outer Duct Replacement - Left Side
Scheme 24: Air Distributor Outer Duct Replacement - Left Side
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim panel retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Air Distributor Outlet Duct - Left Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Air Distributor Outlet Duct - Left
CAUTION
Refer to Fastener Caution .

Air Distributor Outer Duct Replacement - Left Side

Scheme 25

Scheme 25: Air Distributor Outer Duct Replacement - Right Side
Scheme 25: Air Distributor Outer Duct Replacement - Right Side
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim panel retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Air Distributor Outlet Duct - Right Fastener (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Air Distributor Outlet Duct - Right
CAUTION
Refer to Fastener Caution .

Air Distributor Outer Duct Replacement - Right Side

Scheme 26

Scheme 26: Windshield Defroster Duct Replacement
Scheme 26: Windshield Defroster Duct Replacement
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim panel retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Remove Windshield Defroster Duct

Windshield Defroster Duct Replacement

Scheme 27

Scheme 27: Side Window Defogger Outlet Duct Replacement - Left Side
Scheme 27: Side Window Defogger Outlet Duct Replacement - Left Side
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim panel retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Side Window Defogger Duct Left Side

Side Window Defogger Outlet Duct Replacement - Left Side

Scheme 28

Scheme 28: Side Window Defogger Outlet Duct Replacement - Right Side
Scheme 28: Side Window Defogger Outlet Duct Replacement - Right Side
CalloutComponent Name
Preliminary Procedure Remove the instrument panel lower trim panel retainer. Refer to Lower Trim Pad Retainer Replacement (Equinox) , Lower Trim Pad Retainer Replacement (Terrain) .
1Side Window Defogger Duct Right Side

Side Window Defogger Outlet Duct Replacement - Right Side

Scheme 29

Scheme 29: Heater and Air Conditioning Remote Control Replacement (Equinox)
Scheme 29: Heater and Air Conditioning Remote Control Replacement (Equinox)
CalloutComponent Name
Preliminary Procedures Remove instrument panel upper trim. Refer to Instrument Panel Assembly Replacement. Instrument Panel Upper Trim Panel Replacement (Terrain) , Instrument Panel Upper Trim Panel Replacement (Equinox)
1Heater and Air Condition Remote Control. Procedure Disconnect the heater and air conditioning control harness connector. Program the heater and air conditioning remote control. Refer to Control Module References .

Heater and Air Conditioning Remote Control Replacement (Equinox)

Scheme 30

Scheme 30: Heater and Air Conditioning Remote Control Replacement (Terrain)
Scheme 30: Heater and Air Conditioning Remote Control Replacement (Terrain)
CalloutComponent Name
Preliminary Procedures Remove instrument panel upper trim. Refer to Instrument Panel Assembly Replacement. Instrument Panel Upper Trim Panel Replacement (Terrain) , Instrument Panel Upper Trim Panel Replacement (Equinox)
1Heater and Air Condition Remote Control. Procedure Disconnect the heater and air conditioning control harness connector. Program the heater and air conditioning remote control. Refer to Control Module References .

Heater and Air Conditioning Remote Control Replacement (Terrain)

Scheme 31

Scheme 31: Vent Valve Replacement
Scheme 31: Vent Valve Replacement
CalloutComponent Name
Preliminary Procedures Remove the HVAC module. Refer to Heater and Air Conditioning Evaporator and Blower Module Replacement . Disconnect all the electrical connectors from components associated with the HVAC module. Remove any components associated with splitting the air distribution case.
1Distribution Case Fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2Distribution Case
3Vent Valve
CAUTION
Refer to Fastener Caution .

Vent Valve Replacement

Scheme 32

Scheme 32: Heater Core Replacement
Scheme 32: Heater Core Replacement
CalloutComponent Name
Preliminary Procedure Remove the heater and airconditioning evaporator and blower module. Refer to Heater and Air Conditioning Evaporator and Blower Module Replacement .
1Heater Core Cap Fasteners (Qty: 2)
2Heater Core Cap
3Heater Core Procedure Pull out the heater core.

Heater Core Replacement

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